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Related Experiment Videos

When is sensorimotor stroke a lacunar syndrome?

C Y Huang, E Woo, Y L Yu

    Journal of Neurology, Neurosurgery, and Psychiatry
    |June 1, 1987
    PubMed
    Summary

    Lacunar strokes, often causing sensorimotor deficits, are linked to specific brain lesions. This study refines the definition of sensorimotor stroke as a lacunar syndrome based on lesion type and severity.

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    Area of Science:

    • Neurology
    • Radiology
    • Neuroscience

    Background:

    • Lacunar strokes are small ischemic strokes in the brain.
    • Sensorimotor deficits can result from lacunar strokes.
    • Computed tomography (CT) is a key diagnostic tool.

    Purpose of the Study:

    • To investigate the relationship between lacunar infarcts and sensorimotor stroke subtypes.
    • To refine the definition of sensorimotor stroke within the context of lacunar syndromes.
    • To explore the vascular territories associated with these strokes.

    Main Methods:

    • Computed tomography (CT) scans were performed on 45 patients with unilateral sensorimotor impairment.
    • Patients were classified into four types based on sensory modality impairment.
    • Correlation between CT findings (lacunes) and clinical presentation was analyzed.

    Main Results:

    • Lacunes were identified in patients with sensorimotor stroke (type 1), nociceptive impairment (type 2), and proprioceptive impairment (type 3).
    • Incomplete sensory loss with hemiparesis showed a higher prevalence of lacunes (80%) compared to complete motor or sensory impairment (33%).
    • Sensory and motor involvement varied, potentially linked to affected arteries like the thalamo-geniculate, anterior choroidal, or lateral lenticulostriate.

    Conclusions:

    • Sensorimotor stroke as a lacunar syndrome should be primarily associated with mild to moderate hemiparesis and bilateral limb sensory impairment.
    • The specific vascular territory affected influences the clinical presentation of lacunar sensorimotor stroke.
    • CT findings are crucial for diagnosing and classifying lacunar stroke subtypes.

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